Quoting CrAsH1988:" I am 4 days PP and milk came in yesterday, ferociously! Should I wait till i regulate my supply before pumping to stock up? or can I pump now to relieve the engorgement. TIA"If you are engorged you need to pump to alleviate the pressure and prevent mastittis (sp?). It will help your baby with their feeding as well because it won't shoot out at 90mph when they start to nurse, hahah, I had that problem alot with DD and didn't know what to do at the time.